Lifting-jack.



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LIFTING JACK. APPLIOATON FILED HAB. 24, 1913.

Patented July 7, 1914 Z SHEETS-SHEET 1.

R. C. PATTON.

LIPTING JACK.

, 913. 1,102,792, Patented July 7, 1914 2 SHEETS-SHEET 2.

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RALPH CLIFTON PATTON, F PROVIDENCE, RHODE ISLAND.

LIFTING-JACK.

Specification of Letters Patent.

Patented July 7, 1914.

Application led March 24, 1913. Serial No. 756,348.

To alt whom it may concern:

Be it known that I RALPH C. PA'i'roN, a citizen of the United `tates,and resident of the city of Providence, in the county of lrovidonce andState of Rhode Island, have invented certain new and useful Improvementsin Lifting-Jacks, of which the following is a specification.

This invention relates to lifting jacks and has for its object toprovide suoli a jaclg of simple, durable and practical construction, thesame being provided with improved means whereby the base portion iscapable of relative universal adjustment.

It is found in the practical use of a jack of this characterparticularly in automobile work, that when the same is used outl on theroad, it is often difiicnlt to operate the jack to advanta e owing tothe unevennesses or inclination o the road surface, therefore to obviatethis difficulty Iliavc provided simple and practical means whereby thebase portion may receive a universal-adjustment and be set on any anglerelative to the body of the jack, whereby it will accommodate itself tothe angularities of the surface and find a firm footing.

To further perfect -the o eration of this.

improved jack I have provi( ed a sim le and effective locking mechanismto firm y bind and secure the standard to the base at any angle theretothereby makin the jaclc as stili' and rigid as though the gasa werepermanently fixed to the body portion.

The invention further consists in providin a hollow supportin basehaving spherica ly shaped inner and outer surfaces and a pair ofclamping members adapted to secure the standard to the base in anydesired anglo relative thereto.

The invention still further consists in securing the lower clampingmember to the standard in such a wa that it may be longitudinallyadjusted in order to regulate the action of the clamping cam and to alsoprovide the standard and this inner clamping member with a centralopening therethrou h whereby the extending mem er may pass t erethrou hin order to house such a member of maximum length in the standard so asto obtain the greatest extension possible'with'a jack of a 'ven height.

With these and ot er objects in view, the

invention consists of certain novel features of construction, as will bemore fully described and particularly pointed out in the ap )endedclaims.

t f the accompanying drawings: Figure 1- is a perspective viewillustrating my improved jack as applied to the axle of an automobile.Fig. 2- is a side elevation, partly in section, illustrating the lowerportion of the hollow standard, the spherically shaped hollow base andthe cani actuated clamping) means for securing the standard to said ase.Fig. 3 is a modification showing the lower. end of the standard of a slihtly different shape, the same being provi ed with another form of camlocking means which operates through a coarse threaded screw. Figs. 4and 5.- are plan views and side elevations, respectively, partially insection, showing another modified form of cam actuated clamping membersfor securing the standard to the base in any .de-

sired position relative thereto. Fig. 6 is a detail of the cam lever foroperating the mechanism shown in Fi s. 4 and 5. Figs. 7 and 8-show aplan View and side elevation, res ectivel of another form of cam vmemberor bin ing the standard to the base at any desired degree of adjustment,Fig.

8 being partially in section on lino 8--8 of Fig. 7. Fig. 9 is anothermodification illustrating another arrangement whereby the standard maybe secure to the-base.`

Referring tothe drawings, 10 designates the standard of the lifting jackwhich -may be made in any desired form, but which is preferably providedwith a hollow center portion 11 in which the extending member 12 ishoused. Any desired mechanism, not shown, may be mounted in the casing18 to be operated by the handle 14 for forcing outwar and withdrawingthe extending meinber, but I do not claim any particular mechanism forperforming this function as any now on the market may be em loyed in theoperation of my improved jae c, theessential feature of which is theadjustability of thebaseand the means for locking the samein adjustedposition as presently described.

The base member- 15 isl preferably'eon-l structed hollow havingspherically shaped inner and outerl surfaces 16 and 17, respectively,forming a comparatively thin wall or shell with its upper center portionat 18 removed. Thelower portion of the shell is provided with feet 19preferably three in number, so arranged that the space between them issuflicient to admit the 1nner clampin member 20. The .outer surface 21of this inner clamping member is also made in a spherical shape tocorrespond with the inner iae'e of the base,`and its center portion ishollow and threaded as at 22 for the reception of the lower threaded end23 of the standard 10. A locking screw 24 is inserted into this innerclamping member to spring the threaded portion and bind the member inposition on the threaded standar The outer clamping member or shoe 25has an inner concaved surface correspondinv to the outer convex surfaceof the base an a. lockingcollar 26 rests upo'n and is rotatably mountedon the up er face of said shoe 25. The upper face ofp this collar isprovided with a plurality of cam surfaces 27 to correspond with andengage oppositely formed cam-surfaces 28 on the underside of the flange29 of the standard 10. This cam collar is also provided with anactuating handle 30 whereby it may be readily rotated about the end ofthe Standardy to cause said inner andouter clamping members to clampand' bind the shell of the base between them and retain the standard atany desired relative angle to the base.

n operation when my improved jack is ositioned beneath the axle Vof anautomobile, or other work, where the surface ofthe .round is slopinfr,in order to obtain a firm footing upon suci ground or road bed, it isonly necessary to move the handle'30 of-the cam collar to the rightthereby releasin the base andpermitting it to move in any irectionrelatlve to the standard and adjust itself to find a secure footing. Thehandle 30 is then moved back or to the left forcin the cam surfaces 27 aainst lthose 28 of the standard, thereby inding the inner and outerclampin members lagainst the o posite faces of tie base wall'securelyloc ring lee the two together.

A further advantage of the construction shown in Fig. 2 is that thecenter portion of the standard 10 is hollow Vcompletely through ,itslower end, thereby permitting an extending member of maxlmum length tobe housed in the standard.

T-he construction Shown in Fig. 3 is somewhat similar to thatillustrated in Fi 2 with the exceptionthat the lower end .o the standard10 is smaller or not large enough to haveahole Y,through it of afszeeufiicient to receivethelower end of the extending membeLmnd-#iusteadefe. lurality of independenteam surfaces. a .i lustrated in Fig.

2, .this portion of the standard is provided with what is considered theequivalent of said cams, which is that of a square threaded screw 32which has substantially the same efl'ect upon the binding collar 31 asthe cams 27 and 28, viz., to bind the clamping members 53 and 54 to thecurved wall of the base.

Another form of cam action for binding the standard to the base isillustrated in Figs. 4 and 5 in which the inner clamping member 33 isprovided with upwardly extending ears 34 which project through apertures35 in the outer clamping member 3G which latter is cast with orotherwise permanently connected to the standard 37 and a cam lever 3S,see Figs. 4, 5 and is made in the form of a yoke with its ends 39 and l0made in the shape ot' a cam and is connected to the lower clampingmember through pins 4l, and 42 whereby when this lever 1s presseddownward said cams serve to draw the lower clamping member upward andbinds the standard to the base.

It will be noted that in Figs. 4 and 5, the outer clamping member isfixed to the standard and the inner clamping member is raised to engageand bite the inner face of the base, while in Figs. 2 and 3 the reverseis the case, that is, the upper member is loose and is pressed downwardto grip the wall of the base.

In the construction shown in Fig. 9 the lower end of the standard 43 ismade in a spherical shape and is retained in a base 44 having aplurality of upwardly extending fingers 45 which are provided with acorresponding spherical surface on their inner faces to receive the ballorspherical end of the standard whereby relative universal ,movement maybe had.

The upper ends of these fingers are threaded as at 46 on a taper and anut 47 is adapted to be screwed onto this tapered portion for thepurpose of springing inward these fingers causing them to grip and bindthe ball end of the standard 43 to retain it at any desired relativedegree of adjustment therein.

The structure illustrated in Figs. 7 and 8 is similar to that of Fig. 9with the exception that the ring 48 is provided with a plurality of camsurfaces 49 which engage the ends of the fingers 50 whereby a rotatingmovement of said ring in one direction springs the fingers inward tobind t-he spherical end of the standard therein and a movement in theother direction releases the same. Screws 51 are inserted into the endsof each finger and' a collar 52 is secured be neath the head overlappingthe ring for the purpose of preventing the ring from workmgfrom the endsof the fingers.

have shown and described a number of different forms of adjustable basesand means for locking the same to the standard,

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but any means for accomplishing this purpose will fall within ythespiritand scope of this invention.

I claim:

1. A lifting jack comprising a standard, an extending member therein, asupporting base, a clamping member within said base, and meansexteriorjfof said base for operating said clampingfiember-for lockingsaid base and standard together at any desired angle. a

2. A lifting jack comprising a standard, an extending member therein, asupporting base, a clamping member within said base, a clamping memberexterior of said base and cooperating with said first mentioned memberto lock said standard and base together at anyy desired angle;

3. A lifting jack comprising a standard, an extending member therein, asupporting base, a clamping member Within said base, a. clamping memberexterior of said base and coperating with said irst mentioned member,and alever for operating said exterior member to lock said base andstandard together at an desired angle.

4. A lifting jac comprising a standard, an extendin member in saidstandard, a supporting said standard may receive a universal movementrelative to said base,- and a cam for locking said base and standardtogether in any desired relative position. v.

5. A lifting jack comprising a standard, an .extending member in saidstandard, a base member, means whereby said standard may receive auniversal movement relative to said base, and a readily adjust-able camcollar for locking said base and standard together in any desiredrelative posit-ion.

6. A lifting jack comprising a standard, an extending member in saidstandard, a supporting base formed pf a shell curved on both its innerand outer surfaces, a pair of clamping members engaging said inner andouter curved surfaces of said shell, one of said members being connectedto said stand# ard and the other free to be moved, and means forclamping said members to said vbase for retaining the standard and basein any desired relative position.

7 A lifting jack comprising a standard, an extending member in saidstandard, a supporting base formed of a shell curved on both its innerand outer surfaces, a pair ase member, means whereby' of clamping shoesengaging. said inner and outer curved surfaces of said shell, one ofsaid shoes being connected to said standard and the other free to bemoved, and cam mechanism for clamping s id members to said base forretaining the s andard and base in any desire-d relative position.

8. A lifting jack comprising a. standard, an extending member in saidstandard, a hollow supporting base having spherically shaped inner andouter surfaces, a clamping member engaging the inner face of said base,said standard being connectedto said inner clamp, and a second clampingmember engaging the outer surface of said base and a cam collar forreadily binding said clamps to said base whereby relative universalmovement of said base and standard may be obtained.

9. A lifting jack comprising a' standard, an extending member in saidstandard, a hollow supporting base having spherically shaped inner andouter surfaces, a clamping member engaging the inner face of said base,said standard being connected to said inner clamp, and a second clampingmember engaging the outer surface of said base and a cam collar forreadily binding said clamps to said base whereby relative universalmovement of said base and standard may be obtained, and means wherebysaid inner clamping member may be adjusted on said standard to controlthe biting action of the Vloclring cam. 4

10. A lifting jack comprising a standard, an extending member in saidstandard, a hollow supporting base having spherically shaped inner andouter surfaces, a clamping member engaging the inner surface of saidbase said standard being adjustably cont

